Interesting informationI'd start by looking at trees or shrubs that are native to your area.
Spruce and fir do well in birch forests.
Birch and fir trees (specifically paper birch and douglas fir) actually have been found to exchange nutrients to the benefit of both species.
https://www.arborday.org/perspectives/paper-birch-douglasfir-odd-relationship
https://www.npr.org/sections/health...r-tree-ecologist-hears-lessons-for-people-too

no wonder my yard is such a mess!
